基于主成分分析的图像压缩，通过传入图像矩阵、主成分配置、子块大小来进行PCA处理，可得到压缩重构的图像矩阵、压缩比、贡献率信息-Image compression based on principal component analysis, by passing the image matrix, the main component configuration, the sub-block size to PCA processing, compression can be obtained